Davis—Parasitic Fungi in Wisconsin — I. 
83 
on this host collected at Ithaca, N. Y., by Higgins (com. Barthol¬ 
omew) bear both this and form 3 on the same leaves. 
After this was written a collection was made from the exami¬ 
nation of which the following characters were noted: spots angu- 
lar-suborbicular, at first brown with a narrow darker margin, 
then grey and finally mottled with small angular cream colored 
areas, sometimes confluent, 2-3 mm. in diameter; pycnidia mostly 
hypophyllous and inconspicuous, 65-75/*, in diameter; sporules, 
hyaline, filiform, acute, 3-6 septate, 38-60 x 2 1 / 2 -S 1 /2y. On Popu¬ 
lous grandidentata. Devils Lake, Wisconsin, Aug. 6, 1913. 
In this connection a still more recent (Aug. 21, 1914) collec¬ 
tion on Populus deltoides is of interest. Phyllosticta populina 
Sacc. is said to occur in association with Septoria populi Desm. in 
Europe. Having made a collection of the former at Prescott the 
associated Septoria was examined with some interest. The spots 
are orbicular, cinereous with a narrow dark margin and re¬ 
semble those of form 2 except in the grey color which in the 
older spots changes to white. On some of the leaves are small 
angular, confluent spots like those of typical Septoria musiva 
Pk. Of the first mount from this material it was noted “spor- 
ules mostly 18-22 x 2-3/*, 1-2 septate with occasional longer ones 
up to 48/*. and 3-septate ”; of another mount ‘ 4 3CM5 x 2-3/*, 
2-3 septate”. This seems to connect with the forms described 
above and suggests that there is a widely variable species of 
Septoria occurring on Populus in both America and Europe. 
Septoria Candida (Fckl..?) Sacc. I have not seen, but the des¬ 
cription indicates that it might readily fall in with the Ameri¬ 
can forms. 
Cercospora geranii Kell. & Sw. Of a specimen collected at 
Blue Mounds the following notes were made. Hyphae usually 
straight, slightly colored, often toothed, 25-75 x 6-7/*; conidia 
hyaline, cylindrical, usually more or less curved, obtuse, becom¬ 
ing pluriseptate, 100-165 x 4-5/*. 
Cercospora subsanguinea Ell. & Evht. is sometimes devoid of 
color and the obtuse conidia sometimes divide in the middle. It 
appears to be more nearly a Ramula/ria. 
Gloeosporium fragariae (Lib.) Mont. My notes of the 
measurements of the sporules of the fungus referred to this spe¬ 
cies range from 12-24 x 4-5/*. It was collected at Spooner. 
